01: /*
02: * $Id: ExecuteForwardCommand.java 471754 2006-11-06 14:55:09Z husted $
03: *
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "License"); you may not use this file except in compliance
10: * with the License. You may obtain a copy of the License at
11: *
12: * http://www.apache.org/licenses/LICENSE-2.0
13: *
14: * Unless required by applicable law or agreed to in writing,
15: * software distributed under the License is distributed on an
16: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17: * KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations
19: * under the License.
20: */
21: package org.apache.struts.chain.commands;
22:
23: import org.apache.commons.chain.Command;
24: import org.apache.struts.chain.contexts.ActionContext;
25: import org.apache.struts.config.ForwardConfig;
26:
27: /**
28: * <p>Look up and execute a commons-chain <code>Command</code> based on
29: * properties of the ActionContext's <code>forwardConfig</code> property.
30: * </p>
31: */
32: public class ExecuteForwardCommand extends ExecuteCommand {
33: /**
34: * <p>Return the command specified by the <code>command</code> and
35: * <code>catalog</code> properties of the <code>forwardConfig</code>
36: * property of the given <code>ActionContext</code>. If
37: * <code>forwardConfig</code> is null, return null.</p>
38: *
39: * @param context Our ActionContext
40: * @return Command to execute or null
41: */
42: protected Command getCommand(ActionContext context) {
43: ForwardConfig forwardConfig = context.getForwardConfig();
44:
45: if (forwardConfig == null) {
46: return null;
47: }
48:
49: return getCommand(forwardConfig.getCommand(), forwardConfig
50: .getCatalog());
51: }
52:
53: /**
54: * <p> Determine whether the forwardConfig should be processed. </p>
55: *
56: * @param context The ActionContext we are processing
57: * @return <p><code>true</code> if the given <code>ActionContext</code>
58: * has a non-null <code>forwardConfig</code> property.</p>
59: */
60: protected boolean shouldProcess(ActionContext context) {
61: return (context.getForwardConfig() != null);
62: }
63: }
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